Random Vancouver Island spots:
Port Alice (Quatsino) is pavement all the way and had free parking across the road from the launch. It can get full and then I don't know where you would put your rig. I did stop at Alice Lake when I drove back from Port Alice. I launched and went to the lake's inlet (Marble River?). Washed the salt off of the boat and myself.
Holberg (Quatsino) is a gravel launch okay at high tide. There is no fuel and maybe not even a place to tie on the single dock. You may have to raft and climb across one of the apparently abandoned boats. Parking is free, unsecured, and you will be the only one there. The Holberg Inlet is fine for lonesome cruising. There are some spits with good clam digging and a few places to anchor if you trust that the wind won't come up.
It is about an hour run from Holberg to Coal Harbor, where there was fuel when I was there, but it wouldn't surprise me if they kept odd hours. I think Holberg is on the road to Winter Harbor and I would just keep going. I've never been to Winter Harbor by road, but it can't be any worse than launching at Holberg and a whole lot closer to the main cruising/fishing area. The store at Winter Harbor was surprisingly well stocked. There is fuel.
Gold River (Nootka Sound) was a zoo when I was there and I didn't want to get involved in finding out what was secure and what was affordable and what was legal and where to get in line for using the launch. I just kept on to the Moucha Bay Resort. Not a good road and would be slow with a bigger boat. There was a launching and parking fee, but not bad. I parked quite a distance away (and uphill). Freshwater rinse. Launch is best at high tide, but ramp is shallow and requires at least hip boots (for solo). There is a fuel dock.
Tahsis is even further along the same gravel road. There is fuel, a grocery store, and a restaurant. There is a slightly larger grocery store in town, but it is a hike (or a bike ride). I don't remember the launching or parking situation. I can't imagine that too many people choose this as their launching site.
Zeballos (also Quatsino) is accessed from a different gravel road further north. It has fuel. You need to contact the "store" on channel 6 and see if anyone responds (or if they have anything that you need). The only benefit is that the launch is apparently free (mid to high tide only) and free parking is close by or apparently anywhere in town where your trailer fits. It is mainly commercial fishing and has good showers across from the launch.
Continue on from Zeballos to Fair Harbor (Kyuquot Sound). The road gets a little worse, but mainly because of several massive road work projects. It is possible that the projects have been finished in the last four years and the road is better. I recall it was about +4 hours from pavement (Highway 19) to Fair Harbor. The locals probably drive that in an hour, so be careful. Fuel is only available in Fair Harbor. Some of the fishing lodges may have room for dinner guests. We actually stayed one night for dinner, laundry, showers, breakfast and a sack lunch. A nice break in the middle of 10 days on a 16 foot boat.
There are some pictures in my "Travels 2016" photo album. If I was planning on cruising "inside," then Nootka would be my choice, probably launching at Port Alice. Lots of nooks and crannies in the backwaters with the fishermen all zooming around outside. If I wanted to play around "outside," then north out of Kyuquot with the the Bunsbys as home base and exploring Checleset Bay and Nesparti Inlet. All fishing is closed in most of the area, so the sports fishermen from the resorts to the south don't bother. We saw one other boat (a logging company transport) in our time in the Bunsbys. If the weather is good, you can poke out a mile offshore to get outside the closure zone and fish some seamounts with fantastic fishing.
Most of the books that I have read about circumnavigating Vancouver Island are by sailors making runs from one safe anchorage to another. Once inside the various inlets, the descriptions get sketchier. Probably the circumnavigators are too concerned about the next leg outside to explore the inside. Even the Bunsbys are considered a stopover and, if the tides and weather are favorable, quickly abandoned for the next destination. Turns out that 10 days in the Bunsbys was just a brief introduction. I suppose it depends on what one likes about boating.
Mark